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| PRODUCT DATA of IMI 685 |
| Material | IMI 685 |
| Product Datasheet | IMI 685 |
| General Information | TIMETAL 685, a near alpha alloy, combines excellent tensile strength with high temperature (968°F / 520°C) creep resistance. It is a weldable alloy that has good forging characteristics - forging temperatures above the beta transus can be used. The alloy may be joined by the processes normally used in the fabrication of titanium, including argon-arc, electron beam and friction welding. Material should be fully heat treated prior to welding, and also given a suitable post-weld treatment (exam-ple 4- 8hrs at 1022°F / 550°C). The weld zone of material treated in this way will have similar structure and properties to the parent metal. data from timet |
| Chemical Composition | Ti-6Al-5Zr-0.5Mo |
| Name of Manufacturer | TIMET
The Hub,Holford Road, Witton, Birmingham B6 7AX, UK +44 121 356-1155 EuroSales@timet.com +44 121 356-5413 www.timet.com |
| PHYSICAL PROPERTIES |
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| Specific Gravity | 4.45 |
| Magnetic Properties | Nonmagnetic |
| THERMAL PROPERTIES |
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| Thermal Conductivity | 4.15 W/m.K |
| Thermal Expansion Coefficient | 9.7 μstrain/°C |
| RELEVANT PROPERTIES FOR USE IN SPACE COMMUNITY |
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| Stress Corrosion Status | High Resistance to SCC: Table 1 |
| Bimetallic Corrosion | Can be connected without any restriction to: Cr, Cu, Brass, Cu-Ni alloys, Al-bronzes, Si-bronzes, Gun metal, P-bronzes, Sn-bronzes, Ag, 300 and 400 series stainless steel, low alloy steel, Au, Pt, C, Rh
Can be connected in a non-controlled environment to the above and Ni, Monel, Inconel, Ni-Mo alloys Can be connected in a clean room environment to above and Cd, Al-Cu alloys Needs specific measures: All others Test:ECSS-Q-ST-70C Rev.1 Table 5.1 Data Quality: Design Data |